Home / 78,346.48-117,467.58-40,419.40

Finding the Fourth Proportional to 78,346.48, 117,467.58 and 40,419.40

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Solution

The fourth proportional to 78,346.48, 117,467.58 and 40,419.40 is: 60,602.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,346.48 : 117,467.58 = 40,419.40 : x
  2. Step 2: Convert to fraction form
    78,346.48/117,467.58 = 40,419.40/x
  3. Step 3: Cross multiply
    78,346.48x = 117,467.58 × 40,419.40
  4. Step 4: Simplify right side
    78,346.48x = 4,747,969,103.05
  5. Step 5: Solve for x
    x = 4,747,969,103.05/78,346.48
  6. Step 6: Final answer
    x = 60,602.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.